Pump



A. W. BURKS Aug. 9, 1932.

PUMP

Original Filed Aug. 16. 1927 Qwwmko'z Feral/F 30/ 1 vided with e I W adapted for operation Patented Au a, 1932 7 UNITED STATES PATENT OFFICE Applicationnled'Aug'uat 10, 1927, Serial This invention relates to umps, and more particularly to pumps of t e type compris- 1ng a rotary element provided with a series of buckets adapted to impart repeated im- 51 pulses 'to liquid passing through a passageway from an inlet'port to an outlet port, the passageway being substantially sealed against leakage of the liquid therefrom. Pumps of this general type are disclosed in 1;? Patents 1,619,285 and 1,619,286, granted arch 1, 1927. An object of an improved pump of this type having a rotor and casin of improved form, and proective means for sealin the fluid raceway or passageway against lea age.

A further object of the invention is to provide a pump which may be cheaply manufactured and readily assembled, and which is through extended periods without adjustment or repair. hese and other objects of the invention havin to do with the provision of a pump, whic is efiicient and positive in operation, will become clearer as the description proceeds in connection with the preferred embodiment of the invention shown in ing. wherein Figure 1 is a front elevational view with a portion of the casing broken away, and

- Figure 2 is a vertical sectional view on the line 22 of Figure 1.

ihe casing has'a main section 10 forming an interior chamber. 11 which receives the rotor 12 having a hub 13 receiving a shaft 14 to which the rotor is secured, as by means of a pin 15. The shaft extends through a hearing 16 to the exterior of the casing where it may have associated therewith any suitable rotating means, such as the pulley 17. The bearing 16 may be sealed against leakage as by means of packing 18 and a glandnut 19 threaded within the bearing 16.

The rotor is of substantially cupped formaa rim portion 20, the inner and outer surfaces 21 and 22 of which adjacent the rim margin substantially parallel the rotor axis. On the inner surface 21 is provided a plurality of in- 5 clined blades 23 arranged in a channel and the invention is to provide the accompanying draw tion having, preferably adjacent its margin,

aarm w. nuaxs, or naca'run, ILLINOIS 110. 213,315. Renewed ombu- 22,1929.

forming therebetween an annular series of buckets adapted to receive and impart impulses to 11 uid which may be introduced into the casing t rough an inlet port 24 formed in a casing section 10 having a portion 10" fitting within the rotor and provided with a channel 25 opposite the blades, and forming in conjunction with the blades and buckets.

a fluid passageway. The channel is in substantially annular formation, but does not extend at the top of the casing between the inlet port 24 and outlet port 26, as illustrated in F1 re 2, the casing portion 10" bein there ormed to fit closely against the expose edges of the blades to prevent liquid from passing the outlet port back to the inlet ort. The casing thus serves to deflect fluid iro'm the raceway through the outlet port. To assist in supporting the rotor, the casing section 10 may be rovided with a centrally disposedportion 2 providing a bearing for the end of the shaft 14 which extends throu h the rotor into a bush'ng 28 fitted closely wit in the bearing. Thisportio'n of the casing may be secured to the casing 10 in any suitable manner, as by the screws 29.

At opposite sides of the blades 23 and of the raceway 25, the casing and rotor have a sealing engagement, for the purpose of making the raceway substantiall' liquid-tight. The rotor is rovided at opposite sides of the casing with t e sealing surfaces 30 which are disposed in planes inclined relative to the. axis of the rotor, and parallel to one another. These surfaces are spaced along the axis so 5 that they are disposed, respectively, in diiferent radial planes and, as will be observed, they are also disposed at different radial distances from the axis or, in other words, they are readily spaced from one another. These surfaces cooperate with the coacting surfaces 31 upon the casing section 10", and the co, acting surfaces'are provided with interen- I gaging ribs'and-grooves 32. This construction permits a relatively close fit between the rotor and easing, which will efliciently seal" the liquid within the raceway for extended periods of operation, and any excessive clearance resulting from wear may be taken up no by adjustment of the rotor.

" As will be head, the casing has behind the rotor a considerable space mto which any derstood liquid seeping from the raceway may ass through an opening 33 in the rotor. Ihe space of the opening 33 will balance the pres sure of any escaping liquid against the rotor on opposite sides thereof, and will the liquid to pass into the interior of the chamber 11 behind the rotor and lubricate the device.

In the 0 ration of the pump, it will be unat the fluid'passes lnto. the raceway through the inlet port 24, and operation of the rotor by means of power applied to the \pulley 17 in a counter clockwise irection will I 1 cause the blades to en age the fluid repeatedly as it passes throng the raceway and impart impulses thereto. The liquid, as 1t 5 p advances in the raceway, will repeatedly pass into and out of the buckets, the frequency of engagement with the buckets varying in accordance with the back ressure at the outlet.

High back pressure at e outlet will tend to lengthen the ath of the fluid by increasing the number 0 times it is subjected'to the action of the rotor.

- Obviously, theinvention is not limited to it the details of the construction illustrated and described, and numerous modifications will v occur to one skilled in the art without depart- 7 ing from the essence of the invention, wh ch is set forth in the following claims. t

Having thus described my invention, what claim 1s: v 1. A pump comprising a rotor having a plurality of blades formmg'buckets having mouths opening inwardly toward the rotor axis and a casing making a substantially liquid tight seal with the rotor besides the buckets whereby to form with the buckets a fluid p ageway, said casing having inletand outlet port 2. A pump comprising a rotor having a lurality of inwardly directed blades formmg buckets having mouths opening inwardly toward the rotor axis, and a casing having a I substantially annularchannel facing said buckets whereby to form a liquid passageway, said casing having inlet and outlet ports and making a substantially liquid tight seal with the rotor besidethe buckets and a the raceway.

3; A pump comprising a rotor havirig a plurality of inwardly directed blades formmg buckets having mouths opening inwardly toward the rotor axis,'a casing having a substantially annular channel facing said buckets whereby to form a liquid passageway, said casing having inlet and-outlet ports and makings substantiallyliquid tight seal with the rotor beside the buckets and the raceway, and liquid deflecting means interposed between the,,.inlet and outlet ports and closely fitt ng the exposed edges of the blades to depermit substantially Ii annular channel passageway through the liquid tight seal with the rotor beside the buckets, said casing having inlet and outlet ports.

5. A pump comprising a substantially cupshaped rotor havin a marginal rim provided on its inner ace with a plurality of blades directed inwardly and orming inwardly opening buckets, and a casing hav ing. a portion fitted within said on and makinga substantially liquid ti ht with the rotor beside the buckets, sai casing havinginlet and outlet ports, and an annular channel facing said buckets and forming therewith a fluid passagewa 6. A pump comprising a su stantially'cu shaped rotor havin rim a plurality of blades directed inwardly having a portion fitting within said cup an making a substantially li uid .tight seal with the rotor beside the budkets, said casing having inlet and .outlet ports, and

ports and closely fittin gas of the blades g on the inner surface of said rim forming a 0n the inner face of its and forming inwardly opening buckets, and

a casm plurality of inwardly opening buckets and a casing having a portion making a substantially liquid tight sealwith the rotor beside said buckets and forming with the latter a uid tight passageway said casing havin inlet and outlet ports communicating w1th said passageway.

8. A ump comprising a rotor having a run, a p urality of inwardly directed blades 1 on the inner surface of said rim formin a plurality of inwardly openin buckets an a ng a substam casing having a portion ma tially li uid tight seal with the rotor beside said buc ets and forming with the latter a substantially liquid tight passageway, said casing having inlet and outlet ports communicating with said passageway'and having an facing said buckets. 9. A pump comprising a rotor having a rim, a p urality of inwardly directed blades on the inner surface of said rim forming a lurality of inwardly opening buckets and- 5 a casing having a portion making a substantially 11 uid tight seal with the rotor beside said buc ets and forming with the latter-a substantially liquid tight passageway, said casing having inlet and outlet ports comf Inunicating with said pway, and prorotor having a rim portion provided on its inner surface with a plurality of inwardly directed blades formin inwardly opening buckets and sealing sur aces at opposite sides of said buckets.

12. In a pump, a rotor having a rim portion provided on its inner surface with aplurality of inwardly directed blades forming inwardly opening buckets and sealing surfaces at opfposite sides of said buckets, one sealing sur ace being disposed substantially radially inwardly and the other radially outwardl from the buckets, said sealing surfaces ing inclined relative to the rotor axis.-

13. In a pump, a rotor having a rim por-- tion provided on its inner surface with a plurzlity of inwardly directed blades forming inwardly opening buckets and sealing surfaces at opposite sides of said buckets, said sea-ling surfaces :being inclined relative to the rotoraxis and in substantally parallel as planes.

-14. In a pump, a substantally cup-shaped rotor having a rim portion provided on its inner surface with a plurality of inwardly directed blades forming inwardly opening buckets and sealing surfaces at op osite sides of said buckets, said sealing sur aces being inclined relative to the rotor axis and in substantially parallel planes. v

15. A pump comprising a rotor having a plurality of inwardly directed blades forming buckets having mouths opening inwardly. toward the rotor axis a casing facing said buckets whereby to' form a liquid passageway, said casing having inlet and outlet ports with the rotor at both sides of the buckets and the raceway, and liquid deflecting means interposed between the inlet and outlet ports and closely fitting the exposed edges of the 5s blades to deflect liquid from the-passageway through the outlet port.

16. A pump comprising a rotor having a plurality of blades forming buckets havingbuckets a fluid passageway, said casing having inlet and outlet ports, the casing and rotor having passageway sealing surfaces at andmaking a substantially liquid-tight seal.

opposite sides of the buckets mama relative to the rotor axis.

17. A pum comprising a rotor having a plurality of lades forming buckets having mouths opening inwardly toward the rotor axis and a casing making a substantially liquid-tight seal with the rotor at both sides of the buckets whereby to form with the buckets a fluid passageway, said casing having inlet and outlet ports, the casing and rotor havin at opposite sides of the buckets sealing sur aces inclined relative to the rotor axis, the surfaces at one side of the buckets being substantiall parallel to the surfaces at the opposite si e of the buckets. v 18. A pump comprising a rotor having a plurality of inwa ing buckets having mouths opening inwardly toward the rotor axis and a casing having a substantially annular channel facing said buckets whereby to form a. liquid assagewag, said casing having inlet and out et ports an making a substantially liquid-ti ht seal with the rotor at both sides of the uckets and the raceway, the casing and rotor having at opposite sides of the buckets sealingsury directed blades formfaces inclined relative toward the rotor axis,

the surfaces at one side of the buckets being substantially parallel to the surfaces at the opposite side of the buckets.

19. A pump comprising a substantially cup-shaped rotor having a plurali of blades forming buckets on the inner sur ace of the I rim thereof,'said buckets opening inwardly toward the rotor axis at substantially a right no angle thereto, a casin for said i'otor having.

a portion making a su stantially liquid-tight seal therewith at opposite sides of the buckets, said casing and rotor havin atv opposite sides of the buckets sealing aces inclined relative to the rotoraxis.

20. A pump comprising a substantially. A cupshaped rotor having a pluralitfy of blades forming buckets on the inner sur ace of the rimthereof, said buckets opening inwardly toward the rotor axis at substantially a right angle thereto, a casin for said rotor having a portion-making a su stantially liquid-tight seal therewith at op osite sides of the buckets, said casing an rotor having at opposite sides. of the buckets sealing surfaces inclined relative to the rotor axis, with the surfaces at one side substantially parallel to the surfaces at the other side.

In testimony whereof I have hereunto set my hand.

ARTHUR W. BURKS. 

